Description

Star SR-20R – Year 1999
CNC Swiss Lathe
New – 1999

SPECIFCIATIONS:
Control Axis Specifications:
– Rapid Feed Rates (Z, X ,Y, ZB, XB)…………787.4″/min
– Rapid Feed Rate (C)…………550 RPM
– Turning Feed Rate (Z, X, Y, ZB, XB) – Maximum………..393.7″/min
– Turning Feed Rate (C) – Maximum………..27.8 RPM
– Input Increment (X, Y, XB) – Minimum………..0.0001″
– Input Increment (Z, ZB) – Minimum………..0.0001″
– Input Increment (C) – Minimum………..0.001°
Machining Capability:
– Turning Diameter – Maximum………..0.787″ Ø
– Headstock Stroke – Maximum…………8.07″
Drilling Capacity – Maximum:
– Stationary Tooling…………25/64″ Ø
– Power-driven…………5/16” Ø
Tapping Capacity – Maximum:
– Stationary Tooling…………M8 x P1.25
– Power-driven…………M6 x P1.0
Milling Capability (Power Driven Tool) – Maximum…………25/64″ Ø
Die Cutting Capability (Stationary Tool) – Maximum…………M8 x P1.25
Slotting Capability (Power-Driven Tool) – Maximum…………0.059″(W) x 0.157″(D)
Main Spindle:
– Spindle Speed…………500 – 10,000 rpm
– Speed Control…………S Code + Direct 5 Digit Command
– Spindle indexing…………0.01° (C-axis control)
– Rotational Control…………AC Spindle Drive
– Main spindle motor………….3HP (Continous)/5 HP (15 min/50%ED)
Tool Post:
– Tool (No. of Tools)…………6
– Sleeve (No. of Tools)…………4
– Power Driven (No. of Tools)…………3~8 (3 Tools for Cross-Milling are Standard)
– Spindle Speed (Power Driven Attachment) – Maximum…………8000 RPM
– Speed Control (Power Driven Attachemnt)…………AC Servo Drive
Coolant Unit:
– Capacity…………40.9 Gal
– Motor…………0.5 HP
– Safety Device…………Coolant Level & Flow Detectors
Hydraulic Power Unit:
– Capacity…………2.6 Gal
– Normal Pressure…………493 psi
– Pump Motor…………1 HP
Pneumatic Unit:
– Normal Pressure…………72.5 psi
– Piping Bore…………Rc1/4
– Pneumatic Amount…………2.41 cfm
Lubrication System:
– Oil Discharge Amount…………0.09 in^3
– Tank Capacity…………0.21 Gal
BACK ATTATCHMENT:
– Chucking Diameter – Maximum…………0.787″ Ø
– Part Length – Maximum…………3.14″
– Part Projection Length – Maximum…………1.18″
– Part Insert Length – Maximum…………2.95″
Sub-Spindle:
– Speed…………500 – 8000 RPM
– Speed Control…………S Code + Direct 4 Digit Command
– Rotational Control…………AC Spindle Drive
– Indexing Angle – Minimum…………15° (24 Divisions)
– Motor…………2 HP (Continous) / 3 HP (15min/50%ED)
Machining Capability:
– No. of Tools (Back 4-spindle unit)…………4
– No. of Tools (4-spindle sleeve holder)…………4
– Drilling Capability (Stationary Tool) – Maximum…………5/16″
– Drilling Capability (Power Driven Tool) – Maximum…………17/32″
– Tapping Capability (Stationary Tool) – Maximum…………M8 x P1.25
– Tapping Capability (Power Driven Tool) – Maximum…………M4 x P0.7 (M3 x P0.5 for rigid-tapping)
– Milling Capability (Power Driven Tool)…………0.196″ Ø
– Speed (Power Driven Attachment)…………500 – 8000 RPM
– Motor (Power Driven Attachment)…………0.5 HP
Electrics…………
Dimensions – Approximate…………87″L x 43″W x 67″H
Weight – Approximate…………4850 Lbs.

EQUIPPED WITH:
SR Evolution Model Variation:
– Variation 1…………Cross Milling
– Variation 2…………Front Off-Center Drilling
– Variation 3…………Main/Sub Spidle Rigid Tapping
– Variation 4…………Main-Sub Spinlde Simultaneous Drilling
– Variation 5…………Slotting
Fanuc 18i-T CNC Control
Part Conveyor
Live Back working Tool Option (live spindles may not be included)
C Axis Main
Misc. Collets